Belt Guard Aftercooler fo Truck Compressor Kit (HT979)

Belt Guard Aftercooler fo Truck Compressor Kit When air is compressed, it is heated as high as 350 degrees, which vaporizes and thus suspends water. An aftercooler cools compressed air down to within 15 degrees above ambient temperature, substantially reducing water & other contaminants in your air supply. In effect, water will be reduced by 50% for every 20 degree reduction in temperature, typically resulting in up to a 65% reduction of water in in your air system.